Coaxial cable is a two-wire transmission system.?
As you said, coax is a two-wire transmission line so you have to connect the shield to the reference point at each end. Coax is also an unbalanced transmission line so you have to treat it as such. Note that there are actually two transmission lines in play here: 1. The inside of the coax from the center conductor to the shield which carries the signal.2. An open wire transmission line between the shield and the rest of the world which is typically either shorted to ground or open circuited at...